Carrier for pneumatic-despatch-tube apparatus.



"No. 722,562. PATENTED MAR. 10, 1903'. c. H. BURTON. CARRIER FOR PNEUMATIC DESPATGH TUBE APPARATUS.

APPLIUATION FILED JULY 7, 1902.

2 SHEETS-SHEET 1.

10 MODEL.

. EEVWM -II II PATENTED MAR. 10,1903. 0. H. BURTON.

CARRIER FOR PNEUMATIC DESPATGH TUBE APPARATUS.

APPLICATION FILED JULY 7, 1902.

no MODEL.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

CHARLES H. BURTON, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN PNEUMATIC SERVICE COMPANY, OF DOVER, DELAWARE, A CORPORATION OF DELAWARE.

CARRIER FOR PNEUMATlC-DESPATCH-TUBE APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 722,562, dated March 10, 1903.

Application filed July 7, 1902. Serial No. 114,573. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES H. BURTON,

of Boston, in the county of Sufiolk and State ofM-assachusetts, have invented certain new 5 and useful Improvements in Carriers for Pneumatic Despatch Tube Apparatus, of

which the following is a specification.

My invention relates to new and useful improvements in carriers for pneumatic despatch-tube apparatus,and especially to mechanism for locking the caps to the shell of the carrier, and also to mechanism for preventing the operation of the locking mechanism at all times excepting when the cap is in i proper locking position.

My invention consists of certain novel features hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, which illuszo trate a construction embodying my invention, Figure l is an elevation of the inside of the cap when open. Fig. 2 is an elevation of the outside of the cap. Fig. 3 is a cross-sectional view on the line X X, Fig. 1,

looking in the direction of the arrow. Fig.

4 is an elevation of the inside of the cap,

showing the position of the bolts when the cap is locked to the shell.

Like letters of reference refer to like parts throughout the several views.

A represents the shell of the carrier, to which is hinged at B the cap 0. On the in side of the carrier is a block or disk D, movable upon the pin E, on the inner end of which is secured the nut F, which nut is held firmly in position by the pin F in the manner shown. Around the pin E on the outside of the cap is fixed fast the lever G, whose limit of movement is regulated by the strap H, secured to the outside of the cover, as

shown in Fig. 2. On the short end of the lever G there is pivotallyconnected at G the rod G guided in its movements by the bracket G and when the cap is unlocked extends beyond the circumference of the cap, as shown in Fig. 2. The pin E, which is the axis of the lever G, is located in the center of the cap 0 and in its movements is always within the circumference of the cap.

To the disk D there are pivotally connected at J three bolts K, which pass through guidebearings K, as shown in Fig. 4, and when the cover is unlocked, as shown in Fig. 1, the bolts are Within the circumference of the cap, at which time the lever G is in position shown in Fig. 1, and consequently if by accident the operator should close the cap, thinking he had looked it, and attempt to insert the carrier into the tube the rod G would strike the tube, thus preventing the insertion of the carrier. To lock the cap, the lid is closed, the edge of the shell striking the finger L, which extends through the opening L in the cap and in alinement with the edge of the shell, and this finger L is mounted on the arm L on the pin E beyond the lever G. This striking of the finger L by the edge of the shell A removes this finger L from its position in front of one of the bolts K, and inasmuch as the bolts move together the movement of the disk moves all the bolts. When the cap has been closed, as above described, and put in proper locking position, as shown in Fig. 3, with the bolts K in alinement with the openings A C in the shell and cap, respectively, the end of the lever G is taken hold of and moved from the position shown in Fig. 2 toward the left, which will operate to turn the disk D and shoot the bolts out through the openings A C, and thus lock the cap to the shell in the manner indicated in Fig. 4. At the same time the rod G is drawn inwardly, so that its extreme end comes within the periphery of the cap, and the carriers can then be inserted into the tube for transmission. Secured to the cap underneath the strap is a V-shaped lug H, over the top of which the lever G can be moved when swung upwardly, but which normally holds the lever G in either of its two positions-that is, when the locking mechanism has locked the cap to the cover or when the cap is unlocked and the carrier is open-so that the lever G cannot be accidentally moved. 5

It is obvious from the above description that a carrier cannot be introduced into the tube until it is positively locked, because the rod G if the cap is not locked,wil1 projectbeyond the body of the carrier a sumcient distance to prevent the insertion of the carrier into the tube, and this rod G cannot be withdrawn until the movement of the lever G to lock the cap to the shell of the carrier. It is clear that if the carrier has been introduced into the tube the cap cannot be unlocked, because the rod G Would contact with the sides of the tube and prevent the lever G from turning and withdrawing the bolts.

By the construction above described I have provided mechanism which prevents the operation of thelocking mechanism until the cap is in proper locking posltion,and,further, I have provided mechanism whereby the carrier cannot be inserted into the tube until the cap is locked positively to the shell.

I do not limit myself to the construction shown, as the same may be varied without departing from the spirit of my invention.

Having thus described the nature of my invention and set forth a construction embodying the same, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In apneumatic-despatch-tube carrier, a cap,locking mechanism for securing the cap to the shell of the carrier, means pivoted in the center of the cap and located on the exterior thereof for operating said locking mechanism to lock and unlockthe cap, means arranged to engage with said locking mechanism and normally hold said locking mechanism against movement, and means with which said holding means engages for releasing said locking mechanism upon the movement of said cap into locking position whereby said locking mechanism may be operated to lock the cap to the carrier.

2. In a pneumatic-despatch-tube carrier, a cap, locking mechanism for securing the cap to the shell of the carrier, means pivoted in the center of the cap and located on the exterior thereof for operating said locking mechanism to lock and unlock the cap, a lock arranged to engage with said locking mechanism and normally hold said locking mechanism against movement, and means with which said lock engages for releasing said locking mechanism upon the movement of said cap into locking position whereby said locking mechanism may be operated to lock the cap to the carrier.

3. In a pneumatic-despatch-tnbe carrier, a cap, locking mechanism for securing said cap to the shell of the carrier, means pivoted in the center of the cap and located on the exterior thereof for operating said locking mechanism, means on said cap cooperating with said looking mechanism and arranged to project beyond the shell of the carrier and thereby prevent the insertion of the carrier into the despatch-tube until the cap is locked to the carrier, a lock arranged to engage with said locking mechanism and normally hold said locking mechanism and projecting means against movement, and means on the shell of the carrier with which said catch engages upon the movement of the cap into locking position to release said lockingmechanism from said lock whereby said locking mechanism may be operated and said projecting means may be withdrawn from beyond the shell of the carrier to permit the insertion of the carrier into the despatch-tube.

4. In combination with a carrier-shell, a cap for closing the open end thereof, bolts for securing the cap to the shell, a lever pivoted in the center of said cap for operating said bolts, a lock arranged to normally prevent the motion of said bolts to lock the cap, and means as the shell of the carrier for removing the lock and allowing the bolts to operate.

5. In combination with a carrier-shell, a cap for closing the open end thereof, bolts for securing the cap to the shell, a lever pivoted in the center of said cap for operating said bolts, a lock arranged to normally prevent the motion of said bolts to lock the cap, means as the shell of the carrier for removing the lock and allowing the bolts to operate, and means cooperating with said lever for preventing the insertion of the carrier until the cap is locked to the carrier.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 25th day of June, A. D. 1902.

CHARLES H. BURTON. 

